Run long enough and someone will eventually ask how you avoid boredom over 26.2 miles. David Babcock has a surprising answer: He knits.

The 41-year-old University of Central Missouri professor makes scarves and bags while training, and tomorrow Babcock is aiming for a personal record: knitting a 9-foot, 10-inch-long scarf during the Kansas City Marathon, a feat that would earn him a Guinness world record, according to local news station KCTV 5.

“It took a long time to do distance running. It takes a long time to do knitting. I thought these could go together. They are both kind of tedious. I thought it would be a fun challenge,” Babcock told KCTV.

British runner Susie Hewer currently holds the record for the longest scarf knitted while running a marathon. She knitted a 6-foot, seven-inch-long orange, yellow and blue scarf this year at the London Marathon, while managing to finish the race in 5:58.

Babcock has been training at 10:00 per mile pace (a 4:22 marathon), though as the Daily Star-Journal reports, speed has no bearing on the record: Babcock is required to use size 15 needles, have 30 stitches per row and use the garter stitch in order to break the record.

He’s nervous about the weather, according to the Star-Journal, but if the rain holds off, he stands a chance.

No word on his color choices for tomorrow’s potentially record-breaking scarf, but you can see Babcock’s run-knit technique in the video below.